/*
 * Copyright 2012-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package samples.websocket.tomcat;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
import org.springframework.web.socket.handler.PerConnectionWebSocketHandler;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;

import samples.websocket.tomcat.echo.DefaultEchoService;
import samples.websocket.tomcat.echo.EchoService;
import samples.websocket.tomcat.echo.EchoWebSocketHandler;
import samples.websocket.tomcat.reverse.ReverseWebSocketEndpoint;
import samples.websocket.tomcat.snake.SnakeWebSocketHandler;

@Configuration
@EnableAutoConfiguration
@EnableWebSocket
public class SampleTomcatWebSocketApplication extends SpringBootServletInitializer implements WebSocketConfigurer
{
    
    /**
     * Main run
     * 
     * @param args
     * @see [类、类#方法、类#成员]
     */
    public static void main(String[] args)
    {
        SpringApplication.run(SampleTomcatWebSocketApplication.class, args);
    }
    
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application)
    {
        return application.sources(SampleTomcatWebSocketApplication.class);
    }
    
    /**
     * register
     */
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry)
    {
        registry.addHandler(echoWebSocketHandler(), "/echo").withSockJS();
        registry.addHandler(snakeWebSocketHandler(), "/snake").withSockJS();
    }
    
    /**
     * echo
     */
    @Bean
    public WebSocketHandler echoWebSocketHandler()
    {
        return new EchoWebSocketHandler(echoService());
    }
    
    @Bean
    public EchoService echoService()
    {
        return new DefaultEchoService("Did you say \"%s\"?");
    }
    
    /**
     * snake
     */
    @Bean
    public WebSocketHandler snakeWebSocketHandler()
    {
        return new PerConnectionWebSocketHandler(SnakeWebSocketHandler.class);
    }
    
    /**
     * reverse
     */
    @Bean
    public ReverseWebSocketEndpoint reverseWebSocketEndpoint()
    {
        return new ReverseWebSocketEndpoint();
    }
    
    @Bean
    public ServerEndpointExporter serverEndpointExporter()
    {
        return new ServerEndpointExporter();
    }
    
}
